Q.
The maximum number of structural isomers (acyclic and cyclic) possible for C4H6 are
197
196
Organic Chemistry – Some Basic Principles and Techniques
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Solution:
Consider the possible structures of the molecule. Either it will have a triple bond CH3−CH2−C≡CH or two double bonds CH2=CH−CH=CH2 or one double bond in a ring
The isomer with a triple bond is CH3−C≡C−CH3.
The isomer with a double bond is CH3−CH=C=CH2.
The ring isomers are
Therefore, total isomers are seven.
